Type-writer carriage mechanism.



R. W UHLIG.

TYPE WRITER CARRIAGE MECHANISM.

A?PLIOATIH FILED JAH. 1S, 1909.

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R,..W. UHLIG', e TYPE WEITER CARRIAGE MEGHANISM.

. APPLIUATION FILED JAN. 19, 1909 950, 1 96.

n Patented Feb. 22., 1910.

s SHEETS-SHEET 2.

R. W. UHLIG.

TYPE WRITER CARRIAGE MRGHANISM.

APPLICATION FILED JAN. 19, 1909.

Patented Feb.22,1910.

3 SHEETS-SHEET 3.

RICHARD W.UHLIG, 0F RUTHERFORD, 4NEW JERSEY, ASSIGNOR T0 EMERSON, TYPE- XVRITER COMPANY,QOF CHIGAGO, ILLINOIS, A CORPORATION OF MAINE.

TYPE-WRITER CARRIAGE MECHANISM.

Specification of Letters Patent.

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Application le January 19, 1909. Serial No. 473,176.

To 'all whom it may concern:

Be it known that I, RICHARD W. Urine, a

.citizen ofthe United States, residing'at -construction and arrangement of the car ringe mechanism for mounting and supporting the devices above referred to.

Further objects will appear from a detailed' description of the invention, which consists iny the features-of construction and combination of parts hereinafter described and claimed.

In the drawings Figure l is. a sectional elevation from front to rear through the center of a typewriter, showing the platen moved to a position to bring the right'end thereof inelevation; Fig. 2 an enlarged cross sectional'view .of the platen, carriage -and associated parts; Fig. 3 a front elevation of the platen and carriage; Fig. l an inverted plan View of the carriage frame; F ig. 5 an inverted plan view, showing the carriage frame removed; Figs. 6 and'7 enlarged details showing the-line spacing lever and gear mechanism for moving the platen; Figs. 8 and 9, rea-r elevations of the line spacing lever in differentpositions of adjustment; and Fig. l() a face view of the l platen gear.

Referring to Fig. l, the mechanism is `mounted upon a rectangular frame com-2 23 which engages a universal bar24, which is hung from and hinged-to a cross nod 25, the ends of which are mounted inthe side walls of the frame. The universal bar has depending therefrom an varm 26 which engages the forward end of a feed lever- 27 28,-.'fafnd provided, forward, of said catch iin'- ger, with a slot '20 which engages the lower end of a pivoted dog finger 30', the upper end of which projects above the top wallor floor of the frame in the form of an escape ment dog 31, which coacts with a stop dog 32 in normally feeding the carriage. This` dog mechanism is of an old and well known type and need not be described in detail. The escapement dog engages with a toothed carriage rack lbar 32a which is in the'forniof a -thinplate of metal inserted edgewise within a channeled socket bar 33 which -ex. tends' fromend to end of and is integrally riage frame is further provided in its center with a cross lug 38 which, extends across from and is flush with the channeled socket provided at its rear end with a catch finger bar 33, as best shown in Fig.`2'. This lug providesa mounting ,fora forwardly extending guide plate 39 which engages with an undercut guide rail 40 which is secured to and extends transversely across the floor of the machinel frameat al point adjacent to .the carriage mechanism.4 The carriage framehas secured to its end rails, upwardly extending end plates l4l and 42, which serve asjournal mountings for a platen shaft 43,

which carries a platenel of the usual character. The ends of the shaft are 'extended to receivemill'ed adjusting wheels/l5 and 46 respectively. The end plates are con-- nected by means of n top rail 47 of angle bar formation, which top rail carries' a diagonally disposed paper rest plate 48,`the lower edge of which'extends down into close proximity to the surface of the platen. The

rail 4T has depending'therefrom a .pair of 'lugs i-9 provided-with socket. recesses 50 which embrace a guide rod 51 mounted upon posts 52 which upwardly project from the top of the A machine f raine near the rear edge thereof andserve to hold the guide .rodrigidly intposition -to afforda mounting for the travel ofthe carriage. The carrlage `frame hassecur'ed to the t'op of its center lug 38, and between the side rails of the frame', the center ofa bowed spring 53 lthe endsjof which upwardly project there- `from.- The fiee'fends of the bowed spring 53 bear against the under face of movable .paper gulde plates 56 of curved formation,

which'underlie the platen andare heldin close` proximity thereto bythe action of the spring. The rear edges of the guide platesv .lie clo'selyA adjacent to the forward edge of' the -paper rest plate, so'that the paper will be edf from one .to the other without diiiicu'1ty. `uThe guide plates are provided with to'ng'uesf? which are struck dowii from thel ,metal composing the plates 'and .serve lasV journal mountings for a pair o-f forward lrubber'guide roller-s 58 and rear rubber guide rollers L59, which are mountedin position to project their acting surfaces through ysuitable elongated slots 60 'inl the guide plates. The guide 'plates are arranged end to end,*`so that vin effect they form but a smgle'guide plate. "To the rear of the guide struc plates is4 located a rock' shaft 61, to` which are secured'twopairs lof forwardly-extending rock iingers 62, 'which vare'pivoted to ears ovvnf'rom the metal of the guide k vshaft are j'ou'rnaled vs and-the right hand .a-n upwardly extending lever 61`,"which-:permits the-shaft to be lroc'lred,whic h oscillatesyand carri-es down thejguideA p'latesfrom a position, Vin which therollers are ill-,engagement with the platen 'to' a position'inwhich a` space is afforded for the insertion of asheetof paper.. l'

The platen, shaft, near its left'hand-end,y

'andouside of the left end plate, has mounted thereon va4 gear lwheel 75 having outwardly projecting teeth 76 formedon its outer face Varound its periphery, which teeth mesh with the' teeth ofanoperating spur gear wheel 77, which is journaled upon a' screwstud. 7Sf

forwardly projecting from a` plate 79 which 'projects-at right angles from the outer face of the left end platel immediately loehindv the projecting end of the platen shaft. The

'plate' 79 is rounded on its outer edge 80,' lwhich edgejisprovided'with a plurality of holes 81, any one of which is adaptedto be engaged by the inner end ofv aspring ae.v

tuatedl pin '82 slidably mounted within and normally projecting through the overhang-l ing en d S3 of a swinging arm"84 ,"the inner end of 'which is'pivoted to a stud 85, reali- 4vwardly projecting from the lend `of the screw stud 78. Intermedia-te the actuating-.gear

' wheel 77 -and'the plate 72) is a'dislc Stiwhich has formed thereon a lever 8 7 provided with tudinal lcenter thereof.

' isfactory mounting-for vthe rack bar,

thelatter to be made from hardened la projection 88 ywhich has pivoted thereto a dog 89 which engages the teeth of the actuating gear w-heellA The dog is provided with a'detent 90 adapted to engage a stoppin 91, which outwardly projects from the end 83 of the`swingin'g' arm 84. The' construct-ion is one which permits vthearm to be adjusted to la selected position, thereby regulating theinovement of the dog. "lhis'enablesv the platento be moved a selectednumber" of line spaces with each swing of the lever 87. A

, vThe :traVel'of-the carriage 4is facilitated by the .provisionof a' wheel 92. wl1i'ch rides upon the upper surface of the undercut bar 40, the under face'of which is engagedby the forward edgeof the plate. 39..

. The edges :of the paper are adaptedto be held in position by adjustable guides 113 which are in the form o fbars overlying the platen.l Each of the bars is provided, on

its vouter side, with atongue 114,vwhich. is4

pivoted to'a guide supporting rod 115 lo- .cated immediately above the' platen, the ends -ofwhich are supported by theend lates.

The tongue 114 has inwardly,-.projecti1 ig therefrom a bracket-116, provided at its inner end, with lan ear 117, which is bored to receive the rod 115. `.provide an elongated mounting `for the guide to permit it to'be shifted to any desired position upon the rod. The bracket. "116 is provided with a handlef118. to the rear face of which isriveted a flat spring 119, the free end of which is adapted Ito engage a slot or channel 120 formed in the rear side of the rod. The arrangement is such that when the guide plates are thrown down.

The bracket serves to loo to bring their free ends into 'contact with vthe pla`t enthe free ends ofthe springs will engage the slot, as shown in Fig. 2, and hold vthe guides in contacting pos1tion.

The ,shape of the guide ybars is such that their upper ends diverge awayfrom the surface of. the plates, thereby permitting the free escape ofthe paper from the upper ends of the bars.

In use,'the paper isfed into the machine over the paper rest and between the guide f or the various operating' mechanisms, and

4thechanneledbar 38 furnishes a very satpereaaiiea steel and rigidly held within the carriage- -frame, which may be of cast metal. rThe line spacing gear y mechanism permits the platen to be turned to any desired extent to feed the paper, forward to the lproper degree to secure thetdesired. line spacing, and this without the necessity for the exercise of' care on the part of thetoperator'.- Four adignstnients of the arm Se can be made, which permit the platento be fed forward, with each movement of the lever, fronione to Iour spares, which arrangement permits the linespacing to be easily and quickly regu-v lated by the operator. The method of torni! ing the guide plates and mounting the compression rollers thereon, 1s one Vwhich aiords .a firm and uniform, compression for the paper against the platen, andserves to hold its surface smoothly in position to 'receive the impression of the' type. The mechanism, as a whole, is extreniely simple iii con- 'struction and operation, and at the same' time is strong, durable and reliable.

1What I claim'as new and desire to secure by Letters PatentV is:

Wl. In combinationwith a platen and car fliege, a gear wheel connected with the platen,` a pinion in mesh with said gear wheel, a dog engaging saidppinioii.y a pivoted lever upon which the dog isniounted, a" j pivotally mounted stop member adjacent to the lever and provided with an overhanging portion, a spring supported pin entered f through the overhanging portion.y and a fixed member over which the overhanging portion is adapted vto ride, said iixed member being provided Witha plurality of holes, any one of which Iis adapted to receive the inner end of the pin for adjusting the throwof lthe dog, substantially a's described.

2,111 mechanism of the class the combination of` a carriage frame, rovidedwitli end plates, va platen -journale Ibetween the'end plates, a rod abovethe platen having its ends rigidly entered into the end plates and provided with a longitudinal groove, two ,paper-guidesslidably and pivota1ly,- mounted on the rod, each of the guides comprising a. plate provided, on itsupper edge, with a tongue'einbra'cing the rod, said tongue having connected therewith an ear likewise embracing the rod, a handle connected with each guide, and a dat spring having its outer vend secured to the handle and having its inner.' end in'position to enl gage with the slots in the rod when the freeend of the paper guide is depressed to engage Athe-platen, substantially as described.

3. ln typewriters the combination of a frame, a'platen carried by the frame, a bow spring-of substantially V formation, having its center securedy to theframe below .the

.Y platen,y a pairof curved guide plates -engaged bythe tree. ends of the bow spring, a

pair of compression rollers journaled to each 'v B. F. GRAY, -V. T. BRAssARD.

described, 

